Same here. I'm planning on replacing my Roku TV with a Google/Android TV model and replacing the launcher to avoid ads. Then I'll sideload a YouTube client that has sponsorblock and adblock so I can get the benefits of YT Premium.
But the ecosystem seems to be years old shields that struggle with 4k, cheap junk, and unknown but probably cheap junk from China.
My shield is definitely a lesser experience than my Roku, with the lags and skips, but I can put up with it on most days. But when I want to watch a 4k movie I'll switch over the HDMI cords back to my Roku.